Distribution of α and β phases in the coexistence regime in MnAs(0001) layers grown on GaAs(111)B

Takagaki, Y.; Wiebicke, E.; Däweritz, L.; Ploog, K. H.
August 2004
Applied Physics Letters;8/30/2004, Vol. 85 Issue 9, p1505
Academic Journal
The discontinuous change in the lattice constant that occurs at the first-order phase transition between α- and β-MnAs gives rise to a coexistence of the two phases in MnAs layers grown on GaAs substrates. When the GaAs substrates are oriented in the (111)B direction, the c axis of MnAs is aligned normal to the growth plane. We identify the domain structure of α- and β-MnAs for this crystal orientation by utilizing the different reactivities of the two phases against wet chemical etching. Submicrometer-size islands of α-MnAs are found to be interwoven in a honeycomblike network of β-MnAs. We also show that this domain structure combined with strain effects results in a formation of MnAs lumps by etching.


Related Articles

  • Magnetic and crystallographic properties of Y2(Fe1-x Tx)14B (T=Al, Ti, Cr, Mn, and Ni). Lin, Chin; Lan, Jian; Xu, Xiao-Feng // Journal of Applied Physics;4/15/1987, Vol. 61 Issue 8, p3457 

    Presents a study which examined the magnetic and crystallographic properties of yttrium[sub 2] (iron [sub 1-x]T[sub x])[sub 14] boron compound where T= aluminum, titanium, chromium, manganese and nickel. Crystallization of rare earth[sub 2]iron[sub 14]boron compounds in tetragonal structure;...

  • Mechanism of photoluminescence excitation of Mn2+ ions in ZnS crystals. Prokof’ev, T.; Polezhaev, B.; Kovalenko, A. // Journal of Applied Spectroscopy;Nov2005, Vol. 72 Issue 6, p865 

    The mechanisms of photoluminescence excitation of Mn2+ ions in ZnS crystals have been investigated on the basis of complex analysis of the temperature dependences of the photoluminescence and photoluminescence-excitation spectra of ZnS:Mn crystals. The activation energy of a manganese...

  • Phase formation in the Dy2O3-HfO2-MoO3 system. Crystal structure of the new binary molybdate Dy2Hf2(MoO4)7. Solodovnikov, S. F.; Bazarov, B. G.; Badmaeva, E. Yu.; Tushinova, Yu. L.; Zolotova, E. S.; Bazarova, Zh. G. // Journal of Structural Chemistry;Jul2004, Vol. 45 Issue 4, p657 

    Phase relations have been studied for the subsolidus region of the Dy2O3-HfO2-MoO3 system; binary molybdates, Dy2Hf(MoO4)5 and Dy2Hf2(MoO4)7, were found to form. The crystal structure of the latter has been solved (a= 20.661(3) Å,b= 9.816(1) Å,c= 13.796(3) Å, ß = 113.47(1)°,Z=...

  • Nondestructive damage evaluation for γ′-Ni3(Al,Ti) single crystals containing disordered γ precipitates. Yasuda, Hiroyuki Y.; Yanai, Toshifumi; Umakoshi, Yukichi // Journal of Applied Physics;8/15/2005, Vol. 98 Issue 4, p043905 

    Variation in magnetic properties of γ′-Ni3(Al,Ti) single crystals containing disordered ferromagnetic γ (fcc) precipitates with plastic deformation was examined. The shape and size of γ precipitates depended on annealing time at 1073 K; fine spherical and coarse platelike...

  • Mn site doping induced insulator to metal transition in Pr0.6Ca0.4MnO3. Damay, F.; Maignan, A.; Martin, C.; Raveau, B. // Journal of Applied Physics;8/1/1997, Vol. 82 Issue 3, p1485 

    Presents a study on the doping of manganese (Mn) site Pr0.6Ca0.4MnO3 with various M+ elements. Use of Quantum Design physical property measurement system to obtain magnetotransport measurements; Role of M+ elements in the transition of Pr0.6CaO0.4MnO3 to ferromagnetic metallic state.

  • One Metal-Organic Framework Showing Two-Dimensional Sheet Structure: Synthesis, Structure, and Magnetic Property. Yong Hong Zhou; Zhe Yu Wang // Bulletin of the Korean Chemical Society;Feb2015, Vol. 36 Issue 2, p618 

    Under hydrothermal condition, the reaction of 2,4-dichlorophenoxyacetic acid (2,4-DH) and 1,3-bis(4-pyridyl) propane with MnCl2â‹… gave a novel metal-organic framework (MOF), [Mn(2,4-D)2(H2O)2]n (1). This complex was characterized by IR, elemental analysis, powder X-ray diffraction, and...

  • Magnetic properties and phase transitions in hexagonal DyMnO3 single crystals. Ivanov, V. Yu.; Mukhin, A. A.; Prokhorov, A. S.; Balbashov, A. M.; Iskhakova, L. D. // Physics of the Solid State;Sep2006, Vol. 48 Issue 9, p1726 

    DyMnO3 single crystals of hexagonal modification were grown for the first time by zone melting, and their anisotropic magnetic properties were studied in detail. At T ∼ 7 K, a small uncompensated magnetic moment (∼1 μB per formula unit) is shown to occur along the hexagonal axis. At...

  • Effect of Manganese Substitution on the Magnetic Properties of Nickel-Zinc Ferrite. Sattar, A. A.; El-Sayed, H. M.; El-Shokrofy, K. M.; El-Tabey, M. M. // Journal of Materials Engineering & Performance;Feb2005, Vol. 14 Issue 1, p99 

    The effect of manganese (Mn)-ion substitution on the structural, magnetic, and electrical properties of nickel-zinc (Ni-Zn) ferrite of chemical formula Ni0.6-t Mnt Zn0.4Fe2O4 (t = 0.0, 0.1, 0.2, 0.3, 0.4, 0.45, 0.5, 0.55, 0.6) has been studied. It was found that Mn ion substitution increases the...

  • Crystal Structures of Double Vanadates LiCoVO4 and Li0.5Co1.25VO4. Leonidova, O. N.; Voronin, V. I.; Leonidov, I. A.; Samigullina, R. F.; Slobodin, B. V. // Journal of Structural Chemistry;Mar/Apr2003, Vol. 44 Issue 2, p243 

    The crystal structures of vanadates Li1-2xCo1+xVO4 with x = 0 and 0.25 have been studied by a full pattern analysis. It has been shown that in cubic spinel LiCoVO4 (space group Fd3m), the 8a tetrahedral sites contain a majority of vanadium and a small amount of lithium; all cobalt, lithium, and...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics